Blogs | Freeform Polymers

What Is the Minimum Order Quantity for Injection Molding? What Sets It and How to Order Less

Justin Brown October 22, 2026 No Comments

You need 400 parts for a product launch. The first quote comes back with a 10,000-part minimum. Now you face a hard choice. You can buy parts you don’t need,…

What Is Box Build Assembly? How Parts Become a Finished Product

Justin Brown October 22, 2026 No Comments

Your circuit boards are finished. Your enclosure is molded. Screws, cables, and labels are coming from four different suppliers. Someone still has to turn that pile of parts into one…

What Are the SPI Surface Finish Specifications for Injection Molding? A Guide to All 12 Grades

Justin Brown October 15, 2026 1 Comment

You asked for a smooth, nice-looking part. Then the samples came back shiny, and every fingerprint and tiny dent showed. The mold did exactly what it was told. It just…

What Are the Different Types of Gates Used in Injection Molding?

Justin Brown October 15, 2026 No Comments

Your first sample parts look great until you flip one over. There’s a rough nub right on the face your customer sees first. That nub is where the plastic came…

How Long Does an Injection Mold Last? Mold Life by Class, Material, and Care

Justin Brown October 8, 2026 No Comments

The mold is often the biggest check you’ll write on a plastic part project. So it’s fair to ask how many parts it will give you. Will it cover your…

What Is a Sink Mark in Injection Molding? Causes, Fixes, and Prevention

Justin Brown October 8, 2026 1 Comment

Your first sample parts just came back. They look right until you tilt one toward the light. Then you see it: a shallow dent sitting right over a rib. Nothing…

What Is the Typical Tolerance for Injection Molding?

Justin Brown October 1, 2026 1 Comment

Your CAD model says 25.00 mm. Your first molded parts come back at 24.93 mm. Is that a problem, or is it normal? The answer depends on the tolerance you…

What Is the Process of Annealing Plastic?

Justin Brown October 1, 2026 No Comments

A part passes inspection and ships out on time. Weeks later, it cracks after a solvent wipe or a tightened bolt. Nothing was wrong with the design. The stress was…